NIOCORP DEVELOPMENTS LTD (NIOBF)
NIOBF moved a median of 0.00% 30 minutes after news, and -1.04% by the close. How NIOBF actually reacts to news — the realized, point-in-time move the market made, measured across 391 labeled events over its full measured history with zero look-ahead.
NIOBF’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 33% | 362 |
| 30-min | 0.00% | 38% | 380 |
| 60-min | -0.20% | 42% | 385 |
| to close | -1.04% | 39% | 391 |
| Middle 50% of NIOBF reactions | -1.75% to +0.79% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 391 |
Half of all NIOCORP DEVELOPMENTS LTD news events land between -1.75% and +0.79% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when NIOBF moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to NIOBF's baseline. Nothing else.
Recent NIOBF events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 8-K NIOCORP DEVELOPMENTS For: Oct 13 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| Form 8-K NIOCORP DEVELOPMENTS For: Oct 16 | SEC filing · Form 8-K | SEC EDGAR | — | — | |
| NioCorp Provides Preliminary Unaudited Financial Results for the Three-Month Period Ended September 30, 2026 | Press release | ACCESS Newswire | — | — | |
| EXIM Reiterates Target to Finance Approximately 65% of Elk Creek Project Upfront CAPEX | Press release | ACCESS Newswire | -0.15% | -4.14% | |
| NioCorp Places 100% of Its Planned Critical Minerals Production Under Commercial Sales Agreements | Press release | ACCESS Newswire | -0.73% | -4.57% | |
| U.S. Energy Secretary Chris Wright, EXIM Chairman John Jovanovic, Nebraska Governor Jim Pillen, Senators Deb Fischer and Pete Ricketts, and Congressman Adrian Smith to Visit NioCorp's Critical Minerals Mine Site | Press release | ACCESS Newswire | +0.15% | -2.38% | |
| Form 10-K NIOCORP DEVELOPMENTS For: Jun 30 | SEC filing · Form 10-K | SEC EDGAR | -1.29% | -0.57% | |
| Rare Earth Elements Market Projected to Reach $10.44 Billion by 2030 | Press release | Canada Newswire | -1.73% | -0.80% | |
| Globally Ranked Flexible Legal Talent Company Latitude Opens Denver Office Led by Former Public Company General Counsel | Press release | PR Newswire | +0.00% | -0.28% | |
| NioCorp Project to Expand Production to 8 Made-in-USA Critical Minerals Over a 40-Year Mine Life with an Estimated $4.1 Billion Pre-Tax NPV8% | Press release | ACCESS Newswire | -0.83% | -1.29% | |
| NioCorp to Host Webcast on Aug. 11 to Discuss Elk Creek Feasibility Study Results | Press release | ACCESS Newswire | — | — | |
| Lockheed Martin and NioCorp Sign MOU | Press release | ACCESS Newswire | -0.77% | -3.28% | |
| NioCorp to Appear on CNBC's "Squawk Box Asia" Program Today at 8:30 p.m. ET | Press release | ACCESS Newswire | -0.03% | +0.32% | |
| Form 8-K NIOCORP DEVELOPMENTS For: Jul 02 | SEC filing · Form 8-K | SEC EDGAR | -2.77% | -2.56% | |
| China Is Closing the Door on Heavy Rare Earth Exports for Good, NioCorp CEO Warns in Fox News Op-Ed | Press release | ACCESS Newswire | +0.81% | -0.24% | |
| Past-Producing Nevada Tungsten Asset Lines Up With DIBC Filing And European Mandate | Press release | Canada Newswire | +0.78% | +1.66% | |
| Form 10-Q NIOCORP DEVELOPMENTS For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.09% | -3.70% | |
| The Economic Playbook Behind China's Rare Earth Market Success | Press release | Canada Newswire | +1.71% | +0.94% | |
| Nebraska Passes Law Giving NioCorp More Flexibility in Achieving State Tax Incentives | Press release | ACCESS Newswire | +3.34% | +4.24% | |
| NioCorp to Participate in Maxim Group's "Mining the Industrial Supply Chain" Conference on Apr. 21 | Press release | ACCESS Newswire | -0.67% | -1.84% | |
| NioCorp Reaches Non-Binding Agreement with Traxys North America for Potential Purchase of All of NioCorp's Remaining Planned Products | Press release | ACCESS Newswire | +2.04% | +1.22% | |
| Strategic Demand for Rare Earth Elements Intensifies Across Energy, Defense and Technology Sectors | Press release | PR Newswire | +0.44% | +0.00% | |
| Form 8-A12B/A NIOCORP DEVELOPMENTS | SEC filing · Form 8-A12B | SEC EDGAR | -1.13% | -6.13% | |
| Form 8-K NIOCORP DEVELOPMENTS For: Apr 06 | SEC filing · Form 8-K | SEC EDGAR | -1.13% | -6.13% | |
| NioCorp Reports Voting Results from Its 2025 Annual General Meeting | Press release | ACCESS Newswire | -1.13% | -6.13% | |
| Congressman Adrian Smith Starts Dig of NioCorp's Elk Creek Project Mine Portal | Press release | ACCESS Newswire | +1.72% | -0.57% | |
| NioCorp to Host Live Webinar on Construction of Elk Creek Critical Minerals Project Mine Portal | Press release | ACCESS Newswire | +0.00% | -3.89% | |
| NioCorp Launches Construction of Elk Creek Critical Minerals Project Mine Portal | Press release | ACCESS Newswire | -1.41% | -0.70% | |
| Form 8-K NIOCORP DEVELOPMENTS For: Feb 24 | SEC filing · Form 8-K | SEC EDGAR | -1.41% | -0.70% | |
| Form ARS NIOCORP DEVELOPMENTS For: Jun 30 | SEC filing · Form ARS | SEC EDGAR | -1.41% | -0.70% | |
| Form DEF 14A NIOCORP DEVELOPMENTS For: Apr 06 | SEC filing · Form DEF | SEC EDGAR | -1.41% | -0.70% | |
| Form DEFA14A NIOCORP DEVELOPMENTS | SEC filing · Form DEFA14A | SEC EDGAR | -1.41% | -0.70% | |
| NioCorp Announces Closing of $100.0 Million Public Offering of Common Shares | Press release | ACCESS Newswire | — | -0.81% | |
| NioCorp Announces Pricing of $100.0 Million Public Offering of Common Shares | Press release | ACCESS Newswire | +1.23% | +1.89% | |
| Form PRE 14A NIOCORP DEVELOPMENTS For: Apr 06 | SEC filing · Form PRE | SEC EDGAR | -0.96% | -2.72% | |
| Form 10-Q NIOCORP DEVELOPMENTS For: Dec 31 | SEC filing · Form 10-Q | SEC EDGAR | -2.37% | +5.92% | |
| Global Race for Critical Minerals Accelerates as Market Eyes $700B Opportunity by 2030 | Press release | GlobeNewswire | -0.08% | -9.89% | |
| NioCorp Applauds White House and EXIM For Bold "Project Vault" Initiative | Press release | ACCESS Newswire | -0.93% | -11.19% | |
| Form 8-K NIOCORP DEVELOPMENTS For: Jan 20 | SEC filing · Form 8-K | SEC EDGAR | +3.62% | +3.15% | |
| The Sovereignty Trade: Washington's $2.5B Push to Secure Critical Minerals | Press release | PR Newswire | -1.38% | +0.46% | |
| NioCorp Issues 2025 Year in Review Report | Press release | ACCESS Newswire | -1.06% | -3.61% | |
| Form 8-K NIOCORP DEVELOPMENTS For: Jan 12 | SEC filing · Form 8-K | SEC EDGAR | -2.78% | +6.48% | |
| NioCorp Provides Preliminary Unaudited Financial Results for the Three- and Six-Month Periods Ended December 31, 2025 | Press release | ACCESS Newswire | -2.78% | +6.48% | |
| NioCorp Reports Final Assay Results From the Department of War-Funded Elk Creek Drilling Campaign | Press release | ACCESS Newswire | -2.78% | +6.48% | |
| NioCorp to Begin Construction of Mine Portal at Its Elk Creek Critical Minerals Project | Press release | ACCESS Newswire | +3.87% | +4.04% | |
| Accelerating Momentum for NioCorp as Local Residents, Federal and State Leaders Voice Support at Nebraska Town Hall Meeting | Press release | ACCESS Newswire | +0.16% | +3.34% | |
| NioCorp to Participate in the Race to Onshore Critical Minerals Conference on Dec. 10 | Press release | ACCESS Newswire | +2.77% | +2.62% | |
| Form 8-K NIOCORP DEVELOPMENTS For: Dec 04 | SEC filing · Form 8-K | SEC EDGAR | -2.15% | -6.87% | |
| NioCorp Acquires Scandium Alloy Assets to Support Potential First-Ever Vertically Integrated U.S. Scandium Mine-to-Markets Supply Chain | Press release | ACCESS Newswire | -2.15% | -6.87% | |
| U.S. Senator Pete Ricketts to Attend NioCorp Developments Dec. 5 Town Hall Event | Press release | ACCESS Newswire | -0.17% | +0.79% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the NIOBF section they belong to.
Where else NIOBF is measured.
NIOBF earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Ashland Inc. (ASH) | 393 | +0.02% | 50% |
| Builders FirstSource, Inc. (BLDR) | 393 | -0.20% | 45% |
| Nucor Corporation (NUE) | 391 | -0.03% | 47% |
| Cleveland-Cliffs Inc. (CLF) | 389 | +0.10% | 52% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Basic Materials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is NIOCORP DEVELOPMENTS LTD's median reaction calculated?
Every labeled NIOBF news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 391 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 38% of NIOBF's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does NIOBF's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.